HE 1104-1805 differential light curves

This indicates that the mid-IR emission likely comes from scales large enough to be little affected by microlensing and that there is little differential extinction between the images.

We measure a revised time delay between these two images of 152.2^+2.8^_-3.0_ (1sigma) days from R- and V-band data covering the years 1997-2006. This time delay indicates that the lens has an approximately flat rotation curve over scales of 1-2Re. We also observed uncorrelated variations of ~0.05mag/yr, which we attribute to microlensing of the optical emission from the accretion disk.